#!/bin/sh
#
# Copyright (C) 2009, 2012, 2013, 2014, 2016, 2018, 2022  Etersoft
# Copyright (C) 2009, 2012, 2013, 2014, 2016, 2018, 2022  Vitaly Lipatov <lav@etersoft.ru>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#

# changed since rpm 4.0.4
__rpm_allows_nosignature()
{
    a= rpm --help | grep -q -- "--nosignature"
}

check_pkg_integrity()
{
    local PKG="$1"
    local RET
    local NOSIGNATURE

    case $(get_package_type $PKG) in
    rpm)
        assure_exists rpm
        __rpm_allows_nosignature && NOSIGNATURE="--nosignature" || NOSIGNATURE="--nogpg"
        docmd rpm --checksig $NOSIGNATURE $PKG
        ;;
    deb)
        assure_exists dpkg
        # FIXME: debsums -ca package ?
        docmd dpkg --contents $PKG >/dev/null && echo "Package $PKG is correct."
        ;;
    apk)
        docmd apkg verify $PKG
        ;;
    exe)
        file $PKG | grep -q "executable for MS Windows"
        ;;
    msi)
        # TODO: add to patool via cabextract
        assure_exists cabextract
        #file $PKG | grep -q "Microsoft Office Document"
        docmd cabextract -t $PKG
        ;;
    ebuild)
        true
        ;;
    *)
        docmd erc test "$PKG" && return
        ;;
    esac
}

__epm_check_all_pkgs()
{
case $PMTYPE in
    eopkg)
        sudocmd eopkg check
        return
        ;;
esac

    local j cl
    #local play_installed="$(epm play --list-installed-packages)"
    epm qa --short | xargs -n20 | while read cl ; do
        #cl="$(estrlist exclude "$play_installed" "$i")"
        __epm_check_installed_pkg $cl && continue
        # check each package
        for j in $cl ; do
            __epm_check_installed_pkg $j && continue
            # TODO: check play installed too
            epm --auto reinstall $j </dev/null || exit
        done
    done
}

__epm_check_installed_pkg()
{
case $PMTYPE in
    *-rpm)
        docmd rpm -V $@
        ;;
    *-dpkg)
        assure_exists debsums
        docmd debsums $@
        ;;
    emerge)
        assure_exists equery
        docmd equery check $@
        ;;
    eopkg)
        sudocmd eopkg check $@
        ;;
    *)
        fatal "Have no suitable command for $PMTYPE"
        ;;
esac

}


epm_checkpkg()
{
    if [ "$1" = "--all" ] ; then
        __epm_check_all_pkgs
        return
    fi

    if [ -n "$pkg_names" ] ; then
        # TODO: если есть / или расширение, это отсутствующий файл
        info "Suggest $pkg_names are name(s) of installed package(s)"
        __epm_check_installed_pkg $pkg_names
        return
    fi

    # if possible, it will put pkg_urls into pkg_files or pkg_names
    if [ -n "$pkg_urls" ] ; then
        load_helper epm-download
        __handle_pkg_urls_to_checking
    fi

    [ -n "$pkg_files" ] || fatal "Checkpkg: filename(s) is missed"

    local RETVAL=0

    local pkg
    for pkg in $pkg_files ; do
        check_pkg_integrity $pkg || RETVAL=1
    done

    #fatal "Broken package $pkg"
    return $RETVAL
}
